African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6574

Short Communication

A comparison of the survival and growth performance in rainbow trout (Oncorhynchus mykiss) and brown trout (Salmo trutta fario) fry

  Volkan Kizak1*, Yusuf Guner2, Murat Turel2, Erkan Can1 and Murathan Kayim1        
  1Tunceli University, Fisheries Faculty, Tunceli, Turkey. 2Ege University, Fisheries Faculty, Izmir, Turkey.
Email: [email protected]

  •  Accepted: 21 January 2011
  •  Published: 31 March 2011

Abstract

 

The rainbow trout is an intensively cultured species because of its more cultivatable character than the brown trout. In this experiment, the brown trout culture did not expand due to low growth performance compared to that of the rainbow trout. This experiment was conducted in a commercial trout farm, Aegean Area (Turkey). Growth performances and survivals of rainbow and brown trouts from fry to fingerling were observed for 155 days. Growth performances, feed conversion rates and survivals were determined. The initial weights of the rainbow and brown trouts were 0.1 ± 0.01 g. Final weights were 26.5 ± 5.19 g and 12.97 ± 2.74 g, respectively at the end of experiment. Survival and FCR of rainbow and brown trouts were 83.9 and 80% ; 0.59 and 0.61 respectively. As a result, there is a similarity between these two trout species in point of survivals and FCR’s although growth performance of the rainbow trout was significantly better than that of the brown trout.

 

Key words: Rainbow trout, brown trout, fry, growth, survival.